From f37314b21c285d7cb0e12f3db83a60c41c3b1771 Mon Sep 17 00:00:00 2001
From: Jacopin Eliott <eliott.jacopin@laposte.net>
Date: Tue, 2 May 2023 18:41:32 +0900
Subject: [PATCH] [Add] Suspend/Resume Canvas Zoom by desactivating Navigation

## Major:
- Original NavigateAction (m_NavigateAction of the EditorContext) already has a m_IsActive boolean
- Added methods To gloabal API to directly set it to true (ResumeNavigation) or false (SuspendNavigation).
- As a result, we can call the couple Suspend/Resume to momentarily deactivate the canvas zoom.
---
 imgui_node_editor.h          |  3 +++
 imgui_node_editor_api.cpp    | 10 ++++++++++
 imgui_node_editor_internal.h | 10 ++++++++++
 3 files changed, 23 insertions(+)

diff --git a/imgui_node_editor.h b/imgui_node_editor.h
index a173cde3..a1640b0d 100644
--- a/imgui_node_editor.h
+++ b/imgui_node_editor.h
@@ -368,6 +368,9 @@ int BreakLinks(PinId pinId); // Break all links connected to this pin
 void NavigateToContent(float duration = -1);
 void NavigateToSelection(bool zoomIn = false, float duration = -1);
 
+void SuspendNavigation();
+void ResumeNavigation();
+
 bool ShowNodeContextMenu(NodeId* nodeId);
 bool ShowPinContextMenu(PinId* pinId);
 bool ShowLinkContextMenu(LinkId* linkId);
diff --git a/imgui_node_editor_api.cpp b/imgui_node_editor_api.cpp
index c8c7c3ff..4adf15ff 100644
--- a/imgui_node_editor_api.cpp
+++ b/imgui_node_editor_api.cpp
@@ -576,6 +576,16 @@ void ax::NodeEditor::NavigateToSelection(bool zoomIn, float duration)
     s_Editor->NavigateTo(s_Editor->GetSelectionBounds(), zoomIn, duration);
 }
 
+void ax::NodeEditor::SuspendNavigation()
+{
+    s_Editor->SuspendNavigation();
+}
+
+void ax::NodeEditor::ResumeNavigation()
+{
+    s_Editor->ResumeNavigation();
+}
+
 bool ax::NodeEditor::ShowNodeContextMenu(NodeId* nodeId)
 {
     return s_Editor->GetContextMenu().ShowNodeContextMenu(nodeId);
diff --git a/imgui_node_editor_internal.h b/imgui_node_editor_internal.h
index 4c57725f..fba41970 100644
--- a/imgui_node_editor_internal.h
+++ b/imgui_node_editor_internal.h
@@ -1433,6 +1433,16 @@ struct EditorContext
         m_NavigateAction.NavigateTo(bounds, zoomMode, duration);
     }
 
+    inline void SuspendNavigation()
+    {
+        m_NavigateAction.m_IsActive = false;
+    }
+
+    inline void ResumeNavigation()
+    {
+        m_NavigateAction.m_IsActive = true;
+    }
+
     void RegisterAnimation(Animation* animation);
     void UnregisterAnimation(Animation* animation);